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Estimation of interior-permanent-magnet- synchronous-motor rotor position by analysis of phase-current derivatives

机译:通过相电流导数分析估算永磁同步电动机的转子位置

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摘要

This paper describes an algorithm for estimation of interior-permanent-magnet-synchronous-motor (IPMSM) rotor angular position. The algorithm uses derivatives of motor phase currents resulting from PWM modulation to obtain the rotor position. The presented method is designed for medium- and high-speed range, since it is based on determination of the EMF vector. Calculation of the motor position is performed in every PWM cycle. The standard SV-PWM method is used to determine the sequence of inverter switching during a modulation period. The basis of the algorithm is presented, accompanied by an error analysis. Simulation and laboratory test results are given and discussed.
机译:本文介绍了一种用于估算内部永磁同步电动机(IPMSM)转子角位置的算法。该算法使用由PWM调制产生的电动机相电流的导数来获得转子位置。由于该方法基于EMF矢量的确定,因此被设计用于中高速范围。电机位置的计算在每个PWM周期中执行。标准的SV-PWM方法用于确定调制周期内逆变器切换的顺序。提出了算法的基础,并进行了误差分析。给出并讨论了仿真和实验室测试结果。

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